The Jaguar XF lineup has gradually added more powertrain options, but in other ways it's been consistent over its first generation. The sueprcharged V-8s have thrilling acceleration, and we'd even go so far with the supercharged V-6; the newest turbocharged four-cylinder is a more economical choice. All-wheel-drive versions likely will have better resale value down the road. And if you find a model with the Bowers & Wilkins audio system offered in 2012 and prior model years, don't pass it up--it's one of the best audio systems we've heard.